<template>
    <div>
组件F
值：{{comFData}}
<el-button @click="changeFData">修改值</el-button>
    </div>
</template>
<script>
export default {
    data(){
        return {
            comFData: 22
        }
    },
    methods:{
        changeFData(){
            this.comFData++
        }
    }
}
</script>